Bearing



Nov. 20, 1928.

w. A. VAN BRUNT BEARING Filed June 29. 1922 lowerend of a standard 6 that is adapted to;

' tion of lubricant to Patented Nov. 20, 1928.

UNITED" STATES PATENT OFFICE.

WILLARD A, van BRUNT, or LOS ANGELES, CALIFORNIA, ASSIGNOR TO DEERE & 00M

BANY, or MOLINE, IIJL'INoIs,

A CORPORATION OF ILLINOIS.

. *BEARING.

Application filed Juneae, 1922. Serial No. 571,775.

This invention relates toimprovements in bearings particularly designed for use 1n connection with plow colt-ers, although not necessarily limited to such use. The bearings for plow colters are subjected to severe, usage as they work in dust and trash, and unless freely lubricated the wearuponithe bearings and upon the surface of the colter hub that rotates thereupon israpid and :de stru ctive. Even when well lubricated the wear is sufficient to necessitate adjustments from time to time to compensate therefor. It is theob ject of my present invention to provide a construction thatwill ensure a free applica- I the wearing surfaces; to provide a plurality of non-rotating bearing members normally held .spaced apart by spring meansinterposed between them and which spring means will,up0 n a loosemng of the means that connects said members to their supporting devices, automatically move the bearing members in opposite directlons to compensate for wear of the bearing-stir faces; and to improve generally bearing devices of this general character. I attain'this object by the construction and arrangement of parts shown in the drawing and hereinafter described. That which I believe to be new will be setv forth in the claims. In the draWing,-- c Fig. 1 is a plan view-of a plow-colter and the fork in which it is supported; Fig. 2 is an enlarged view, being aside elevation, with some parts broken away, of the devicesshown in Fig.1; and

Fig. 3 is a cross-section takensubstantially on the line 3-3 of Fig. 2.

Referring to the severalffigures of the drawing,5 indicates the arms of a fork,

which has swiveling connection with the be clamped in any usual manner to a plow beam. Between the fork armslis locatedthe 'T in the form of a spindle, the ends of which are secured in the ends of the fork arms, but

I I substitute for such, I g

cant may be insertedintothe reserVo ir'9L It thereofroundedfor curved to form bearing surfaces .for the hub of the colter to rest againstthe two" contacting surfaces being smooth and hardened, as usual in connection with such wearing parts. Each of the heads 78 at its outer end is provided with one or more flattened surfaces,'so that when fitted into a correspondingly shaped opening in a supporting member rotation will be effectw ally prevented. The fork arms are the supportingimembers forthese heads, and their thickened outer end portions are recessed on their inner faces to adapt them to receive and holdthe outer ends of the heads. Preferably,

such recesses and the portions of the heads spaced a considerable distance apart whereby is provided, when covered by the colter hub as hereinafter described, a reservoir of a capacity large enough to contain a considerable quantity oflubricant. This reservoir is indicated by 9. Passing centrally through the two heads and through the fork arms is a bolt 10, the head of which bears against theouter face of one fork arm and the other endportion of which has screw-threaded con-.

nection with the other fork arm and also carries a jam nut 11 which, when tightened up,

bears against the outer face ofsuch fork arm.

Located within the reservoir 9, andsurround ing the central portionof the bolt 10, isa strong coiled spring 12 that bears at its ends against the two heads 7 and 8 and, of course, acts to keep such heads constantly forced outwardly. The inner end faces of the heads are preferably cupped or recessed, as shown, to receive the ends of the spring. f

13 indicates a plow colter having the usual large central opening to allow of. the. passage therethrough of the bearing members, and. surrounding such opening is a hub formed of; two wide parts '14, 15, secured to opposite sides of the colter by a plurality of rivets 16. Interposed between the inner edge portions of j the'. hub members that project, as shown in Fig. 3, opposite the inner edge of the colter is a gasket 17 that is provided to prevent the escape of lubricant at the joint between such. hubparts. Through one of the hub partso, 14 in the construction shown 'is a. screwthreaded opening 18, through which lubri- L is normally closed by a plug 19 sore-we d therein. V i

.The inner hub partisto be conical-or curved so as to correspond generally to the surfaces ofthe heads, thereby forming proper workingfaces that face or bearin surface of each 

